Transmission-gearing.



H. G. FARR.

TRANSMISSION GEARING.

APPLICATION FILED JUNE 19,1912,

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H. G. FARR.

TRANSMISSION GEARING.

APPLIOATION FILED JUNE 19, 1912.

LUB78M Patented 1191). 17,1911.

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TED sTATE's t PATENT oFFIcE,

HERMAN G. FARB, 0F SPRINGFIELD, MASSACHUSETTS, ASSIGNOB TO KNOX AUTOMOBILE COMPANY, OF SPRINGFIELD, MASSACHUSETTS, A CORPORA- TION OF MASSACHUSETTS.

TRANSMISSION-GEARING.

Specification of Letters Patent.

Patented Feb. i7, 1914.

v.Application led `Tune 19, 1912. Serial No. 704,573.

To all 'whom it may concern Be itknown that l, HERMAN Gf. FARE, a citizen of the .United States of America, residing at Springfield, in the county of Hampden and State of Massachusetts, have invented new and useful Improvements in Transmission-Gearing, of which the following is a specification.

This invention relates to a transmission driving mechanism and casing constructed in such a way that the transmission gearing proper may be removed from the casing or inserted therein as a unit and remain operative. It is usual to support the transmission gearing in a casing havingsuitable bearings for the several shafts. If the transmission gearing needs repairing the several parts are removed separately.

The object of this invention is to provide a casing for the transmission parts in which the transmission earing with all its parts may bel removed from the casing as a unit and when removed said transmission gearing will still be mounted in `bearings in proper relation 'so that the gearing can be operated as well aft-er it has been removed from the casing as when it is in the casing.

Other objects of the invention will appear in the detailed description and annexed claims.

With these objects in view the invention comprises a single casing in which the differential gearing and the transmission gearing is mounted, All the shafts of the transmission gearing as the main shaft, counter shaft and reverse stud shaft have suitable bearings in two head membersl between which members a cage like supporting frame connects. With all the shafts provided with bearings in the two heads of this frame-like structure the casing is so constructed that the frame structure together with its shafts and their gears may be placed in the. casing in suitable supporting surfaces. With this construct-ion the ,two head members and the connecting 'frameI can be removed from the 'rods z' and j are operated lng members z, and g which are provided -to lighten the construction.

scribed as illustrative of Referring to the drawings in which like' reference 'characters refer to the same parts throughout the several views, Figure l` is a plan view of the assembled transmission gearing, differential gearing and shifting rods for said transmission gearing, all in place in the lower half of the casing adapted A'to contain said parts. Fig. 2 is a sectional view on the line 2-2 of Fig. 1. Fig. 3 is a cross sectional view through the casing and the transmission parts as assembled, taken on line 3 3 of Fig. 1.

The upper and the lower half of the casving are designated bya (see Figs. l and Suitable supporting bearings are provided in the casing a-for the differential gearing Z) as indicated in Fig, l. The gear shifting through supportwith suitable registering surfaces in the casings a and Z). These shifting rods have right angle extensions, one extending to the clutch 0 of the transmission gearing and the other tothe clutch n thereof.

rlhe transmission gearing proper is supported in suitable bearings in the two head members e and'f which, as shown,` are circular in form and lit into the casing to be bound therein by suitable fastening devices in a manner obvious from the drawings (see Figs. l and 2). Between these head members e and f there is a connecting frame r which, as shown, is provided with openings at various places either to allow certain of the gears to extend therefrom or The frame structure is made in two parts which are connected by the flanges n1, bound together by fastening devices. `When it is desired to take the transmission mechanism out ofthe casingV as positioned therein in Fig. l it -is only necessary to remove the top half of the casing'a, then lift vertically the supporting members g and it to free said members from the casing and then move it horizontally so that the right-angled forked eX- tensions will leave the clutch members o and n. ltf the fastening devices for the head members c and f are now loosened these members together with the connecting `frame r and the transmission shafts with their gears can be lifted as a unit from the casing a and placed Where desired. It Will be noted that When the transmission gearing is thus lifted from the casing none of the partsthereof are disturbed in their relation to each other so that the transmission mechanism can be operated in the head .members independently of the casing.

In the device shown the transmission mechanism comprises a main shaft lc (see F ig. 3), a counter shaft Z and a reverse stud shaft m of the usual construction with the usual gearing held thereon to give a direct drive in one direction, a lovv drive and an intermediate drive inone direction as Well asV a reverse drive. The main shaft is squared and has on one end the beveled gear d which drives the differential gear b. In order to properly support this beveled gear a3 an extension of the head e is provided as at c which is cast on said head to form an end bearing for the shaft le.

With the construction described it is clear that if it is ever necessary to overhaul the transmission mechanism or adjust the same or repair it in any manner the same can be removed from the casingvvhich ordinarily holds it, taken to a convenient place and operated to find outl Whereit needs adjustment or repairs and after such repairs are made the transmission mechanism can again be operated yto test the same and determine' its accurate operation before it is re-inserted in its casing. This sort'of a struc ture greatly facilitates both the assembling and the repairing of transmission inechanism ordinarily used in automobiles or gas engines of gene-ral use which are usually fixed to some large body as an automobile and as a rule most inconvenient of access.

Bv means of the construction described the transmission mechanism can be taken to a repair shop all apartl from the casing or supported in ysaid frame for operation therein whereby said frame and transmission gear set can be inserted in or taken from said casing While said gear set is in operable condition.

2. The combination of a combined transmission -and differential casing, a separate frame arranged to be supported thereby, a transmission gear set operatively mounted in said frame, a differential gear arranged to operate in said casing to be driven by said transmission gear set, all-adapted and arranged so that said frame With the transmission gear set can be inserted in or taken from said casing and operated either in'or out of said casing.

The combination of a transmission casing and a separate frame arranged to be supported thereby comprising tvvo head` members arranged to it in the casing and means connecting said head members together With a transmission gearing, the shafts of Which are mounted in bearings in said head members whereby the frame can be inserted or removed from the casing without disturbing the operative condition of the transmission gearing.

4. The combination of a combined transmissi'oi and differential casing, a separate frame made in halves comprising each aa frame, transmission gearing operablymounted therein, said casing being arranged to receive said frame whereby the diifern ential gearing Will be driven by the transmission gearing, shiftingA rods to operate the transmissionl gearing as desired also `mounted in saidcasing, all constructed and arranged that either the gearshifting rods, the said frame, or the differential gearing can be taken from or inserted in said casing separately as units. y

HERMAN G. FARR. Witnesses:

K. I. CLEMoNs. 

